Analysis

  • max time kernel
    139s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    18-10-2021 16:28

General

  • Target

    opy BL and Debit Note.exe

  • Size

    422KB

  • MD5

    ce00cefb977e8a50e8942a9ddb6eccee

  • SHA1

    646e7fca81c38570a9a98cf547c030c7590941b9

  • SHA256

    1be9f705235200cb51b70aadeb4252fae371b17c95d09b20ee79160833479ac2

  • SHA512

    e931a9c5e8510ff8fbd7fffec63df18a867fcdc44c374a1316757bada1f7dfcb0a943fa247347b7ddc2577eef1b41f42483367e6dea32b898a16a00a1c0ed7d3

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.davaobay.com.ph
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    p@ssw0rd

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 2 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\opy BL and Debit Note.exe
    "C:\Users\Admin\AppData\Local\Temp\opy BL and Debit Note.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1500
    • C:\Users\Admin\AppData\Local\Temp\opy BL and Debit Note.exe
      "C:\Users\Admin\AppData\Local\Temp\opy BL and Debit Note.exe"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1000

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\opy BL and Debit Note.exe.log

    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/1000-124-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1000-133-0x0000000005BD0000-0x0000000005BD1000-memory.dmp

    Filesize

    4KB

  • memory/1000-132-0x0000000005B30000-0x0000000005B31000-memory.dmp

    Filesize

    4KB

  • memory/1000-131-0x0000000004ED0000-0x0000000004ED1000-memory.dmp

    Filesize

    4KB

  • memory/1000-125-0x00000000004376CE-mapping.dmp

  • memory/1500-119-0x0000000004940000-0x0000000004E3E000-memory.dmp

    Filesize

    5.0MB

  • memory/1500-123-0x000000000AA80000-0x000000000AAD8000-memory.dmp

    Filesize

    352KB

  • memory/1500-122-0x0000000007F20000-0x0000000007F28000-memory.dmp

    Filesize

    32KB

  • memory/1500-121-0x000000000A730000-0x000000000A731000-memory.dmp

    Filesize

    4KB

  • memory/1500-120-0x0000000004960000-0x0000000004961000-memory.dmp

    Filesize

    4KB

  • memory/1500-115-0x00000000000B0000-0x00000000000B1000-memory.dmp

    Filesize

    4KB

  • memory/1500-118-0x00000000049E0000-0x00000000049E1000-memory.dmp

    Filesize

    4KB

  • memory/1500-117-0x0000000004E40000-0x0000000004E41000-memory.dmp

    Filesize

    4KB